An electrical module is electrically conducted with an electronic component, and includes multiple conductors having a first row of conductors arranged in a left-right direction and an insulating body fixing the first row of conductors. Each conductor has a contact portion in contact with the electronic component. A distance between each two adjacent contact portions of the conductors in the left-right direction is defined as a contact interval. The first row of conductors have at least one pair of signal conductors and at least two ground conductors. Each two adjacent sides of the pair of signal conductors has one ground conductor. The contact interval from one signal conductor to its adjacent ground conductor is defined as a first contact interval. The contact interval from the other signal conductor to its adjacent ground conductor is defined as a second contact interval. The first and second contact intervals are not equal.
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1. An electrical module, electrically connected with an electronic component, the electrical module comprising:
a plurality of conductors, having a first row of conductors arranged along a left-right direction, wherein each of the conductors has a contact portion in contact with the electronic component, a distance between each two adjacent ones of the contact portions of the conductors in the left-right direction is defined as a contact interval, the first row of conductors have at least one pair of signal conductors and at least two ground conductors, each of a left adjacent side and a right adjacent side of the pair of signal conductors has one of the two ground conductors, the contact interval from one signal conductor of the pair of signal conductors to an adjacent one of the two ground conductors is defined as a first contact interval, the contact interval from the other signal conductor of the pair of signal conductors to the other adjacent one of the two ground conductors is defined as a second contact interval, and the first contact interval is not equal to the second contact interval; and
an insulating body, fixing the first row of conductors.
14. An electrical module, electrically connected with an electronic component, the electrical module comprising:
a plurality of conductors, having a first row of conductors arranged in a left-right direction, wherein each of the conductors has a contact portion in contact with the electronic component, a center distance between each two adjacent ones of the contact portions of the conductors in the left-right direction is defined as a contact center distance, the conductors have at least one ground unit and at least two pairs of signal conductors, each of the at least one ground unit is formed by at least one ground conductor, each of a left adjacent side and a right adjacent side of the ground unit is provided with a corresponding pair of the at least two pairs of signal conductors, the contact center distance from one of the at least one ground conductor of the ground unit to an adjacent signal conductor of the corresponding pair of the at least two pairs of signal conductors at one of the adjacent sides of the ground unit is defined as a first contact center distance, and the contact center distance from one of the at least one ground conductor of the ground unit to an adjacent signal conductor of the corresponding pair of the at least two pairs of signal conductors at the other of the adjacent sides of the ground unit is defined as a second contact center distance, and the first contact center distance is not equal to the second contact center distance; and
an insulating body, fixing the first row of conductors.
2. The electrical module according to
3. The electrical module according to
4. The electrical module according to
the insulating body, comprising a first side wall and a second side wall provided opposite to each other, and an insertion slot located between the first side wall and the second side wall, wherein the insertion slot is configured for the electronic card to be inserted therein; and
the first row of conductors, having a plurality of pairs of signal conductors and a plurality of ground conductors, wherein each of the left adjacent side and the right adjacent side of each pair of the pairs of the signal conductors has one of the ground conductors, the contact portions of the first row of conductors are arranged in one row on the first side wall in the left-right direction, each of the contact portions of the first row of conductors protrudes into the insertion slot, after being in contact with the electronic card, each of the contact portions of the first row of conductors generates an elastic displacement, and before and after the electronic card is inserted into the insertion slot, the first contact interval is greater than the second contact interval.
5. The electrical module according to
6. The electrical module according to
7. The electrical module according to
each respective partition wall of the partition walls located between the two signal conductors of one of the pairs of signal conductors has a window and two fastening slots, the window runs through the respective partition wall in the left-right direction, the two fastening slots are respectively provided at a left and a right side of the respective partition wall, each of the two fastening slots is a blind hole, and the two fastening slots are not in communication with each other in the left-right direction; and
the two connecting portions of each of the pairs of signal conductors are located at a left adjacent side and a right adjacent side of the window, the two connecting portions are in air communication, the two fixing portions of each of the pairs of signal conductors are respectively fastened in the two fastening slots, and the two fixing portions are not in air communication.
8. The electrical module according to
9. The electrical module according to
10. The electrical module according to
when the first fixing interval is greater than the second fixing interval, the first tail interval is greater than the second tail interval; and
when the first fixing interval is equal to the second fixing interval, the first tail interval is equal to the second tail interval.
11. The electrical module according to
12. The electrical module according to
13. The electrical module according to
15. The electrical module according to
16. The electrical module according to
the insulating body, comprising a first side wall and a second side wall provided opposite to each other, and an insertion slot located between the first side wall and the second side wall, wherein the insertion slot is configured for the electronic card to be inserted therein; and
the first row of conductors, having a plurality of pairs of signal conductors and a plurality of ground conductors, wherein each of a left adjacent side and a right adjacent side of each of the ground units is provided with one pair of signal conductors, the contact portions of the first row of conductors are arranged in one row on the first side wall in the left-right direction, each of the contact portions of the first row of conductors protrudes into the insertion slot, after being in contact with the electronic card, each of the contact portions of the first row of conductors generates an elastic displacement, and before and after the electronic card is inserted into the insertion slot, the first contact center distance is greater than the second contact center distance.
17. The electrical module according to
18. The electrical module according to
19. The electrical module according to
each respective partition wall of the partition walls located between one of the pairs of signal conductors has a window and two fastening slots, the window is located between the two connecting portions and runs through the respective partition wall in the left-right direction, the two fastening slots are respectively provided at a left and a right side of the respective partition wall, each of the two fastening slots is fastened and matched with one of the fixing portions of the one of the pairs of signal conductors, each of the two fastening slots is a blind hole, and the two fastening slots are not in communication with each other in the left-right direction.
20. The electrical module according to
21. The electrical module according to
22. The electrical module according to
when the first fixing center distance is greater than the second fixing center distance, the first tail center distance is greater than the second tail center distance; and
when the first fixing center distance is equal to the second fixing center distance, the first tail center distance is equal to the second tail center distance.
23. The electrical module according to
24. The electrical module according to
25. The electrical module according to
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This non-provisional application claims priority to and the benefit of, pursuant to 35 U.S.C. § 119(a), patent application Serial No. CN201911162467.5 filed in China on Nov. 25, 2019. The disclosure of the above application is incorporated herein in its entirety by reference.
Some references, which may include patents, patent applications and various publications, are cited and discussed in the description of this disclosure. The citation and/or discussion of such references is provided merely to clarify the description of the present disclosure and is not an admission that any such reference is “prior art” to the disclosure described herein. All references cited and discussed in this specification are incorporated herein by reference in their entireties and to the same extent as if each reference were individually incorporated by reference.
The present invention relates to an electrical module, and particularly to an electrical module with good signal transmission performance.
The background description provided herein is for the purpose of generally presenting the context of the disclosure. Work of the presently named inventors, to the extent it is described in this background section, as well as aspects of the description that may not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly admitted as prior art against the present disclosure.
A conventional electrical module is an insertion slot connector, and has an insulating body. The insulating body has an insertion slot configured for insertion of an electronic card (electronic component). In two side walls forming the insertion slot, each side wall is fixed with one row of terminals. Each row of terminals have a plurality of pairs of signals terminals and a plurality of ground terminals, which are alternately arranged at a same center distance and a same interval. That is, one ground terminal is provided at each of two sides of a pair of signal terminals at equal intervals. Each pair of signal terminals are used to transmit signals. Each ground terminal is used to shield adjacent signal terminals and to reduce crosstalk between adjacent pairs of signal terminals. Further, the electronic card matched with the above insertion slot connector has two rows of pads respectively corresponding the two rows of terminals. Each row of pads have a plurality of pairs of signal pads and a plurality of grounding pads, which are arranged at equal intervals, and are correspondingly in contact with each row of terminals.
However, with the requirements for signal transmission in the field of electrical connectors being increasingly high in recent years, the requirements for the frequencies of signals transmitted by the electrical connectors and the electronic cards are also higher. To stably transmit the high-frequency signals, requirements for preventing crosstalk interference have also been increased. For the above requirements, Chinese Patent No. CN200610096618.8 discloses an electrical connector, having a plurality of ground terminals forming a plurality of ground units, where each ground unit is formed by two adjacent ground terminals; and a plurality of signal terminals forming a plurality of signal units, where each signal unit is formed by two adjacent signal terminals. The signal units and the ground units are alternately arranged at equal intervals. The quantity of the ground terminals between two adjacent signal units is increased, thereby preventing the signal terminals from generating interference, and ensuring the quality of signal transmission of the electrical connector and high-current stable transmission.
U.S. Pat. No. 7,316,570 also discloses an electronic card (electrical module) which is matched and inserted with an insertion slot connector (an electronic component). Each of two sides of the electronic card has a row of pads. The pads at one side are arranged as “SSGGSSGG,” and the pads at the other side are arranged as “GGSSGGSS.” The crosstalk between the signal pads is reduced by additionally adding grounding pads.
However, by increasing the quantity of the ground terminals, the ground resonance will also be increased. The ground resonance may cause insertion loss and return loss of the signal terminals, and cause the crosstalk to have sharp resonance points, such that the signal transmission of the electrical connector cannot achieve a desired effect. Further, due to the increase of the quantity of the terminals, the material cost for manufacturing the terminals is also increased, and the dimension of an insulating body for fixing the terminals also needs to be increased to correspondingly fix the newly added terminals, which is not conductive to reducing the cost of the electrical connector. Similarly, adding additional grounding pads to the electronic card may cause the same problem.
Therefore, a heretofore unaddressed need to design a new electrical module exists in the art to address the aforementioned deficiencies and inadequacies.
The present invention is directed to an electrical module which achieves an ideal high-frequency performance effect by adjusting a contact interval or a contact center distance between a pair of signal conductors and a ground conductor.
To achieve the foregoing objective, the present invention adopts the following technical solutions. An electrical module is electrically connected with an electronic component. The electrical module includes: a plurality of conductors, having a first row of conductors arranged along a left-right direction, wherein each of the conductors has a contact portion in contact with the electronic component, a distance between each two adjacent ones of the contact portions of the conductors in the left-right direction is defined as a contact interval, the first row of conductors have at least one pair of signal conductors and at least two ground conductors, each of a left adjacent side and a right adjacent side of the pair of signal conductors has one of the two ground conductors, the contact interval from one signal conductor of the pair of signal conductors to an adjacent one of the two ground conductors is defined as a first contact interval, the contact interval from the other signal conductor of the pair of signal conductors to the other adjacent one of the two ground conductors is defined as a second contact interval, and the first contact interval is not equal to the second contact interval; and an insulating body, fixing the first row of conductors.
In certain embodiments, the contact interval between the pair of signal conductors is defined as a third contact interval, the first contact interval is greater than the second contact interval and also greater than the third contact interval, and the second contact interval is less than or equal to the third contact interval.
In certain embodiments, a first average dielectric coefficient exists between one of the ground conductors and a corresponding one of the signal conductors defining the first contact interval therebetween, a second average dielectric coefficient exists between one of the ground conductors and a corresponding one of the signal conductors defining the second contact interval therebetween, and the first average dielectric coefficient is greater than the second average dielectric coefficient.
In certain embodiments, the electrical module is an electrical connector, the electrical connector is mounted to a circuit board, the electronic component is an electronic card inserted into the electrical connector, and the electrical connector includes: the insulating body, comprising a first side wall and a second side wall provided opposite to each other, and an insertion slot located between the first side wall and the second side wall, wherein the insertion slot is configured for the electronic card to be inserted therein; and the first row of conductors, having a plurality of pairs of signal conductors and a plurality of ground conductors, wherein each of the left adjacent side and the right adjacent side of each pair of the pairs of the signal conductors has one of the ground conductors, the contact portions of the first row of conductors are arranged in one row on the first side wall in the left-right direction, each of the contact portions of the first row of conductors protrudes into the insertion slot, after being in contact with the electronic card, each of the contact portions of the first row of conductors generates an elastic displacement, and before and after the electronic card is inserted into the insertion slot, the first contact interval is greater than the second contact interval.
In certain embodiments, the first side wall has a plurality of partition walls and a plurality of conductor slots, each of the conductor slots is configured to accommodate one of the conductors of the first row of conductors and is in communication with the insertion slot, one of the partition walls is defined between two adjacent ones of the conductor slots, each of the partition walls between one of the ground conductors and a corresponding one of the signal conductors defining the first contact interval therebetween has a first thickness, each of the partition walls between one of the ground conductors and a corresponding one of the signal conductors defining the second contact interval therebetween has a second thickness, and the first thickness is greater than the second thickness.
In certain embodiments, each of the partition walls located between one of the pairs of signal conductors defines a third thickness, and the third thickness is equal to the second thickness.
In certain embodiments, each of the signal conductors has a fixing portion and a connecting portion extending from the fixing portion, and the connecting portion is located between the contact portion and the fixing portion; each respective partition wall of the partition walls located between the two signal conductors of one of the pairs of signal conductors has a window and two fastening slots, the window runs through the respective partition wall in the left-right direction, the two fastening slots are respectively provided at a left and a right side of the respective partition wall, each of the two fastening slots is a blind hole, and the two fastening slots are not in communication with each other in the left-right direction; and the two connecting portions of each of the pairs of signal conductors are located at a left adjacent side and a right adjacent side of the window, the two connecting portions are in air communication, the two fixing portions of each of the pairs of signal conductors are respectively fastened in the two fastening slots, and the two fixing portions are not in air communication.
In certain embodiments, the first side wall has a row of conductor slots arranged in the left-right direction, each of the conductor slots is configured to correspondingly accommodate one of the conductors and is in communication with the insertion slot, the first side wall further comprises a plurality of windows configured to communicate two adjacent ones of the conductor slots in the left-right direction, none of the windows exists in two of the conductor slots corresponding to one of the ground conductors and a corresponding one of the signal conductors defining the first contact interval therebetween, and one of the window exists between two of the conductor slots corresponding to one of the ground conductors and a corresponding one of the signal conductors defining the second contact interval therebetween.
In certain embodiments, each of the conductors has a fixing portion fixed to the insulating body and a tail portion extending out of the insulating body, the fixing portion is located between the contact portion and the tail portion, a distance between each two adjacent ones of the fixing portions of the conductors is defined as a fixing interval, the fixing interval between one of the signal conductors and a corresponding one of the ground conductors defining the first contact interval therebetween is defined as a first fixing interval, the fixing interval between the other of the signal conductors and a corresponding one of the ground conductors defining the second contact interval therebetween is defined as a second fixing interval, the first contact interval is greater than the second contact interval, and the first fixing interval is greater than or equal to the second fixing interval.
In certain embodiments, a distance between each two adjacent ones of the tail portions is defined as a tail interval, the tail interval between the one of the signal conductors and the corresponding one of the ground conductors defining the first contact interval therebetween is defined as a first tail interval, the tail interval between the other of the signal conductors and the corresponding one of the ground conductors defining the second contact interval therebetween is defined as a second tail interval; when the first fixing interval is greater than the second fixing interval, the first tail interval is greater than the second tail interval; and when the first fixing interval is equal to the second fixing interval, the first tail interval is equal to the second tail interval.
In certain embodiments, a width direction is defined to be perpendicular to the left-right direction, the conductors further have a second row of conductors, the second row of conductors and the first row of conductors are parallel in the width direction and provided at intervals oppositely, the first row of conductors and the second row of conductors both have a plurality of pairs of signal conductors and a plurality of ground conductors, at least one of the pairs of signal conductors of the first row of conductors and at least one of the pairs of signal conductors of the second row of conductors are opposite to each other one-by-one in the width direction, and at least one of the ground conductors of the first row of conductors and at least one of the ground conductors of the second row of conductors are staggered one-by-one in the width direction.
In certain embodiments, a width direction is defined to be perpendicular to the left-right direction, the conductors further form a second row of conductors, the second row of conductors and the first row of conductors are parallel in the width direction and provided at intervals oppositely, the first row of conductors and the second row of conductors both have a plurality of pairs of signal conductors and a plurality of ground conductors, and in at least one pair of the pairs of signal conductors of the first row of conductors, one of the one pair of signal conductors is opposite to one of the ground conductors of the second row of conductors in the width direction, and the other of the one pair of signal conductors is not opposite to any conductor of the second row of conductors in the width direction.
In certain embodiments, the electrical module is an electronic card, the electronic component is an electrical connector configured for the electronic card to insert therein, the electronic card comprises an insertion end, configured to be inserted into the electrical module, the insertion end has two plate surfaces parallel and opposite to each other, and the first row of conductors are provided on one of the plate surfaces.
To achieve the foregoing objective, the present invention further adopts the following technical solutions. An electrical module is electrically connected with an electronic component. The electrical module includes: a plurality of conductors, having a first row of conductors in a left-right direction, wherein each of the conductors has a contact portion in contact with the electronic component, a center distance between each two adjacent ones of the contact portions of the conductors in the left-right direction is defined as a contact center distance, the conductors have at least one ground unit and at least two pairs of signal conductors, each of the at least one ground unit is formed by at least one ground conductor, each of a left adjacent side and a right adjacent side of the ground unit is provided with a corresponding pair of the at least two pairs of signal conductors, the contact center distance from one of the at least one ground conductor of the ground unit to an adjacent signal conductor of the corresponding pair of the at least two pairs of signal conductors at one of the adjacent sides of the ground unit is defined as a first contact center distance, and the contact center distance from one of the at least one ground conductor of the ground unit to an adjacent signal conductor of the corresponding pair of the at least two pairs of signal conductors at the other of the adjacent sides of the ground unit is defined as a second contact center distance, and the first contact center distance is not equal to the second contact center distance; and an insulating body, fixing the first row of conductors.
In certain embodiments, the contact center distance between each pair of the at least two pairs of signal conductors is equal and is defined as a third contact center distance, the first contact center distance is greater than the second contact center distance and also greater than the third contact center distance, and the second contact center distance is less than or equal to the third contact center distance.
In certain embodiments, the electrical module is an electrical connector, the electrical connector is mounted to a circuit board, the electronic component is an electronic card inserted into the electrical connector, and the electrical connector includes: the insulating body, comprising a first side wall and a second side wall provided opposite to each other, and an insertion slot located between the first side wall and the second side wall, wherein the insertion slot is configured for the electronic card to be inserted therein; and the first row of conductors, having a plurality of pairs of signal conductors and a plurality of ground conductors, wherein each of a left adjacent side and a right adjacent side of each of the ground units is provided with one pair of signal conductors, the contact portions of the first row of conductors are arranged in one row on the first side wall in the left-right direction, each of the contact portions of the first row of conductors protrudes into the insertion slot, after being in contact with the electronic card, each of the contact portions of the first row of conductors generates an elastic displacement, and before and after the electronic card is inserted into the insertion slot, and before and after the electronic card is inserted into the insertion slot, the first contact center distance is greater than the second contact center distance.
In certain embodiments, the first side wall has a plurality of partition walls and a plurality of conductor slot, each of the conductor slots is in communication with the insertion slot and is configured to accommodate each of the first row of conductors, one of the partition walls is defined between two adjacent ones of the conductor slots, each of the partition walls between one of the ground conductors and a corresponding one of the signal conductors defining the first contact center distance therebetween has a first thickness, each of the partition walls between one of the ground conductors and a corresponding one of the signal conductors defining the second contact center distance therebetween has a second thickness, and the first thickness is greater than the second thickness.
In certain embodiments, each of the partition walls located between one of the pairs of signal conductors defines a third thickness, and the third thickness is equal to the second thickness.
In certain embodiments, each of the signal conductors has a fixing portion and a connecting portion extending from the fixing portion, and the connecting portion is located between the contact portion and the fixing portion; each respective partition wall of the partition walls located between one of the pairs of signal conductors has a window and two fastening slots, the window is located between the two connecting portions and runs through the respective partition wall in the left-right direction, the two fastening slots are respectively provided at a left and a right side of the respective partition wall, each of the two fastening slots is fastened and matched with one of the fixing portions of the one of the pairs of signal conductors, each of the two fastening slots is a blind hole, and the two fastening slots are not in communication with each other in the left-right direction.
In certain embodiments, the first side wall has a row of conductor slots arranged in the left-right direction, each of the conductor slots is in communication with the insertion slot and is configured to correspondingly accommodate each of the first row of conductors, the first side wall further comprises a plurality of windows configured to communicate two adjacent ones of the conductor slots in the left-right direction, none of the windows exists in two of the conductor slots corresponding to one of the ground conductors and a corresponding one of the signal conductors defining the first contact center distance therebetween, and one of the window exists between two of the conductor slots corresponding to one of the ground conductors and a corresponding one of the signal conductors defining the second contact center distance therebetween.
In certain embodiments, each of the conductors has a fixing portion fixed to the insulating body and a tail portion extending out of the insulating body, the fixing portion is located between the contact portion and the tail portion, a center distance between each two adjacent ones of the fixing portions of the conductors is defined as a fixing center distance, the fixing center distance between one of the signal conductors and a corresponding one of the ground conductors defining the first contact center distance therebetween is defined as a first fixing center distance, the fixing center distance between the other of the signal conductors and a corresponding one of the ground conductors defining the second contact center distance therebetween is defined as a second fixing center distance, the first contact center distance is greater than the second contact center distance, and the first fixing center distance is greater than or equal to the second fixing center distance.
In certain embodiments, a center distance between each two adjacent ones of the tail portions is defined as a tail center distance, the tail center distance between the one of the signal conductors and the corresponding one of the ground conductors defining the first contact center distance therebetween is defined as a first tail center distance, the tail center distance between the other of the signal conductors and the corresponding one of the ground conductors defining the second contact center distance therebetween is defined as a second tail center distance; when the first fixing center distance is greater than the second fixing center distance, the first tail center distance is greater than the second tail center distance; and when the first fixing center distance is equal to the second fixing center distance, the first tail center distance is equal to the second tail center distance.
In certain embodiments, a width direction is defined to be perpendicular to the left-right direction, the conductors further have a second row of conductors, the second row of conductors and the first row of conductors are parallel in the width direction and provided at intervals oppositely, the first row of conductors and the second row of conductors both have a plurality of pairs of signal conductors and a plurality of ground units, at least one of the pairs of signal conductors of the first row of conductors and at least one of the pairs of signal conductors of the second row of conductors are opposite to each other one-by-one in the width direction, and at least one of the ground units of the first row of conductors and at least one of the ground units of the second row of conductors are staggered one-by-one in the width direction.
In certain embodiments, a width direction is defined to be perpendicular to the left-right direction, the conductors further form a second row of conductors, the second row of conductors and the first row of conductors are parallel in the width direction and provided at intervals oppositely, the first row of conductors and the second row of conductors both have a plurality of pairs of signal conductors and a plurality of ground units, each of the ground units only has one ground conductor, and in at least one pair of the pairs of signal conductors of the first row of conductors, one of the one pair of signal conductors is opposite to one of the ground units of the second row of conductors in the width direction, and the other of the one pair of signal conductors is not opposite to any conductor of the second row of conductors in the width direction.
In certain embodiments, the electrical module is an electronic card, the electronic component is an electrical connector configured for the electronic card to insert therein, the electronic card comprises an insertion end, configured to be inserted into the electrical module, the insertion end has two plate surfaces parallel and opposite to each other, and the first row of conductors are provided on one of the plate surfaces.
Compared with the related art, certain embodiments of the present invention have the following beneficial effects.
Compared with the related art, in which one row of terminals of the electrical module are provided at equal center distances and equal intervals, the electrical module according to certain embodiments of the present embodiment has the beneficial effects that the first contact center distance is greater than the second contact center distance, and the first contact interval is greater than the second contact interval, such that in each conductive unit, an average contact center distance and an average contact interval from two ground conductors to a pair of signal conductors are increased, thereby reducing the resonance to the first signal conductors from the adjacent ground conductors, increasing the center distances between the two ground conductors at two sides of the pair of signal conductors, reducing overlapping of interfering electromagnetic waves of the two ground conductors adjacent to the pair of signal conductors, and then reducing the ground resonance. Further, the impedance of the pair of signal conductors is reduced, such that when a high-frequency signal is transmitted from the electronic card to the conductors, the energy of the high-frequency signal is more easily transmitted through the pair of signal conductors, thereby reducing the insertion loss, and facilitating the high-frequency performance. Meanwhile, more energy of the high-frequency signal is transmitted through the pair of signal conductors. The pair of signal conductors for transmitting a differential signal has anti-crosstalk characteristics. By having more energy to be transmitted through the pair of signal conductors, the anti-crosstalk effect of the electrical connector is better.
These and other aspects of the present invention will become apparent from the following description of the preferred embodiment taken in conjunction with the following drawings, although variations and modifications therein may be effected without departing from the spirit and scope of the novel concepts of the disclosure.
The accompanying drawings illustrate one or more embodiments of the disclosure and together with the written description, serve to explain the principles of the disclosure. Wherever possible, the same reference numbers are used throughout the drawings to refer to the same or like elements of an embodiment, and wherein:
The present invention is more particularly described in the following examples that are intended as illustrative only since numerous modifications and variations therein will be apparent to those skilled in the art. Various embodiments of the invention are now described in detail. Referring to the drawings, like numbers indicate like components throughout the views. As used in the description herein and throughout the claims that follow, the meaning of “a”, “an”, and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein and throughout the claims that follow, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise. Moreover, titles or subtitles may be used in the specification for the convenience of a reader, which shall have no influence on the scope of the present invention.
It will be understood that when an element is referred to as being “on” another element, it can be directly on the other element or intervening elements may be present therebetween. In contrast, when an element is referred to as being “directly on” another element, there are no intervening elements present. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.
Furthermore, relative terms, such as “lower” or “bottom” and “upper” or “top,” may be used herein to describe one element's relationship to another element as illustrated in the Figures. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the Figures. For example, if the device in one of the figures is turned over, elements described as being on the “lower” side of other elements would then be oriented on “upper” sides of the other elements. The exemplary term “lower”, can therefore, encompasses both an orientation of “lower” and “upper,” depending of the particular orientation of the figure. Similarly, if the device in one of the figures is turned over, elements described as “below” or “beneath” other elements would then be oriented “above” the other elements. The exemplary terms “below” or “beneath” can, therefore, encompass both an orientation of above and below.
As used herein, “around”, “about” or “approximately” shall generally mean within 20 percent, preferably within 10 percent, and more preferably within 5 percent of a given value or range. Numerical quantities given herein are approximate, meaning that the term “around”, “about” or “approximately” can be inferred if not expressly stated.
As used herein, the terms “comprising”, “including”, “carrying”, “having”, “containing”, “involving”, and the like are to be understood to be open-ended, i.e., to mean including but not limited to.
The description will be made as to the embodiments of the present invention in conjunction with the accompanying drawings in
To better understand the technical solutions of the present invention more conveniently, in the three-dimensional coordinates as shown in the drawings, a Z-axis is defined as a vertical direction, an X axis is defined as a left-right direction, and a Y axis is defined as a width direction. The width direction Y is defined to be perpendicular to the left-right direction X and the vertical direction Y.
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In order to promote the coupling of the high-frequency signals between the pair of signal conductors S, the first thin wall 162 between the first signal conductor S1 and the second signal conductor S2 is provided with a window 164, such that the two connecting portions 22 of the pair of signal conductors S are in air communication, and the third average dielectric coefficient ε3 is reduced. Each first thin wall 162 is provided with the two fastening slots 160 located below the window 164 to fix the fixing portions 21. The two fastening slots 160 are blind holes, such that the two fixing portions 21 are not in communication in the left-right direction, which is conductive to the intensity of the insulating body 1, and also conductive to the adjustment of the impedance of the pair of signal conductors S.
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To sum up, the electrical connector according to certain embodiments of the present invention has the following beneficial effects:
1. The high-frequency signal of the electronic card 200 is transmitted to the conductors 2 through the contact portions 23. Insertion loss may be generated in the process of transmitting the high-frequency signal of the electronic card 200 to the conductors 2. The resonance of the ground conductors G is a factor that affects the insertion loss. Compared with the related art where a row of terminals are provided at equal center distances and equal intervals, in the electrical connector 100 of the present embodiment, the first contact center distance 230 is greater than the second contact center distance 232 and the third contact center distance 234, and the first contact interval 231 is greater than the second contact interval 233 and the third contact interval 235, such that in each of the conductive units T, an average contact center distance and an average contact interval from the two ground conductors G to the pair of signal conductors S are increased, thereby reducing the resonance to the first signal conductor S1 from the adjacent ground conductor G.
2. Further, the second contact center distance 232 is equal to the third contact center distance 234, and the second contact interval 233 is equal to the third contact interval 235, such that the center distance between the two ground conductors G of each of the conductive units T is further increased, thereby reducing the overlapping of the interfering electromagnetic waves of the two ground conductors G of each of the conductive units T, and reducing the ground resonance.
3. Compared with the related art, in the present embodiment, the first contact interval 231 is greater than the second contact interval 233 and the third contact interval 235, and the second contact interval 233 is equal to the third contact interval 235, such that the impedance of each pair of signal conductors S is reduced. Thus, when the high-frequency signal is transmitted from the electronic card 200 to the conductors 2, the energy of the high-frequency signal is more easily transmitted through the pair of signal conductors S, thereby reducing the insertion loss, and facilitating the high-frequency performance. Meanwhile, more energy of the high-frequency signal is transmitted through the pair of signal conductors S. The pair of signal conductors S for transmitting a differential signal has anti-crosstalk characteristics. By having more energy to be transmitted through the pair of signal conductors S, the anti-crosstalk effect of the electrical connector 100 is better.
4. In the present embodiment, the first connecting center distance 220 is greater than the second connecting center distance 222 and the third connecting center distance 224, the second connecting center distance 222 is equal to the third connecting center distance 224, the first connecting interval 221 is greater than the second connecting interval 223, the second connecting interval 223 is equal to the third connecting interval 225, the first fixing center distance 210 is greater than the second fixing center distance 212, the second fixing center distance 212 is equal to the third fixing center distance 214, the first fixing interval 211 is greater than the second fixing interval 213, and the second fixing interval 213 is equal to the third fixing interval 215. Therefore, in each of the conductive units T, an average center distance and an average interval from the transmission intermediate paths of the pair of ground conductors G to the transmission intermediate paths of the pair of signal conductors S are increased, which reduces return loss of the pair of signal conductors S and is conductive to the attenuation of the high-frequency signal on the transmission path of the conductors 2.
5. The thickness of the first thick wall 161 is greater than the thickness of the first thin wall 162, such that the first average dielectric coefficient ci is greater than the second average dielectric coefficient ε2. Since the average center distances and the average intervals between the first signal conductor S1 and the adjacent ground conductor G are all greater than the average center distances and the average intervals between the second signal conductor S2 and the adjacent ground conductor G, the first average dielectric coefficient ε1 is greater than the second average dielectric coefficient ε2, thus balancing the capacitance between the pair of signal conductors S and between the ground conductors G at the two sides, and facilitating the coupling of the high-frequency signals between the pair of signal conductors S.
The foregoing description of the exemplary embodiments of the invention has been presented only for the purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching.
The embodiments were chosen and described in order to explain the principles of the invention and their practical application so as to activate others skilled in the art to utilize the invention and various embodiments and with various modifications as are suited to the particular use contemplated. Alternative embodiments will become apparent to those skilled in the art to which the present invention pertains without departing from its spirit and scope. Accordingly, the scope of the present invention is defined by the appended claims rather than the foregoing description and the exemplary embodiments described therein.
Zhang, Biao, Yang, Qi Xiao, Wang, Yong Fu, Yin, Jia Xu, Zhong, Wei Xue
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